Table 2. Factors Associated With Higher T Stage at Presentation in Ordered Logistic Regressiona.
| Clinicopathologic Factor | Univariate Model | Multivariable Model | Reduced Multivariable Model | |||
|---|---|---|---|---|---|---|
| OR (95% CI) | P Valueb | OR (95% CI) | P Valueb | OR (95% CI) | P Valueb | |
| Marital status | ||||||
| Married | 1 [Reference] | NA | 1 [Reference] | NA | 1 [Reference] | NA |
| Never married | 1.12 (1.07-1.18) | <.001 | 1.32 (1.26-1.39) | <.001 | 1.32 (1.26-1.39) | <.001 |
| Divorced | 1.34 (1.26-1.42) | <.001 | 1.38 (1.30-1.47) | <.001 | 1.38 (1.30-1.47) | <.001 |
| Widowed | 2.09 (1.98-2.21) | <.001 | 1.70 (1.60-1.81) | <.001 | 1.70 (1.60-1.81) | <.001 |
| Age, y | NA | NA | 1.01 (1.01-1.01) | <.001 | 1.01 (1.01-1.01) | <.001 |
| Male | NA | NA | 1.22 (1.18-1.26) | <.001 | 1.22 (1.18-1.26) | <.001 |
| Site | ||||||
| Trunk | NA | NA | 1 [Reference] | NA | 1 [Reference] | NA |
| Extremity | NA | NA | 1.32 (1.27-1.37) | <.001 | 1.32 (1.27-1.37) | <.001 |
| Head and/or neck | NA | NA | 1.32 (1.26-1.38) | <.001 | 1.32 (1.26-1.38) | <.001 |
| Income, $10 000 | NA | NA | 0.99 (0.99-0.99) | <.001 | 0.99 (0.99-0.99) | <.001 |
| Educational level | NA | NA | 1.00 (1.00-1.01) | .02 | 1.00 (1.00-1.01) | .006 |
| Urban/rural | ||||||
| Urban (metropolitan) | NA | NA | 1 [Reference] | NA | NA | NA |
| Urban (nonmetropolitan) | NA | NA | 0.97 (0.91-1.03) | .29 | NA | NA |
| Rural | NA | NA | 0.97 (0.85-1.12) | .72 | NA | NA |
Abbreviations: NA, not applicable; OR, odds ratio.
a
Odds ratio in ordered logistic regression is interpreted as the increased odds of presenting with 1 T stage higher.
b
Calculated using the χ2 test.